On February 6th 2018, Elon Musk launched his own personal midnight cherry Tesla Roadster into space on a test Falcon Heavy rocket. The car went sailing away from Earth with a mannequin in a spacesuit, a copy of Asimov's Foundation, a Hitchhiker's Guide the the Galaxy Don't Panic sign, and a plaque engraved with 6000 names of SpaceX employees. There may have been some other things, but finding a reliable source is harder than you'd think.Now that the dust is starting to settle, I want to think about something else - some of the iconic, world-changing images of the Earth from outside, and the addition of this new one seen from the front seat of a car.Here they are:Apollo 8, 1968Image credit: NASAApollo 17, 1972Image credit: NASAInternational Space Station, 2011The Cupola on the ISS, 2014Image credit: NASATesla Roadster, 2018Image credit: SpaceXThis is something that I'll have to think a lot more about, but here are a few initial impressions. Early conceptualisations of what the Earth looked like from outside tended to be greyscale: it was assumed that the blue sky would only appear so from the surface of the Earth (due to Rayleigh scattering). The blueness of the Earth was ...